Boiler-cleaner for steam-engines.



Nb. 870,774. I PATENTED NQV. 12v. 1907. I. G. GRAY.

BOILER CLEANER FOR STEAM ENGINES.

APPLICATION FILED JULY 22. 1907.

2 SHEETS-SHEET 1.

7n: NORRIS PEYERS ca, wllsumo'rdy, 0- c No.'8'70,'774. PATENTED NOV. 12, 1907.

1.0.GEAY. BOILER CLEANER FOR STEAM ENGINES APPLICATION ,IILED JULY 22. 1907. v

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UNITED STATES ISAAC o. GRAY, or

PATENT OFFICE.

BOILER-CLEANER FOR STEAM-ENGINES.

Specification of Letters Patent.

Patented Nov. 12, 1907.

Application filed July 22. 1907. Serial No. 384.905;

To all whom it may concern:

Be it known that I, ISAAC O. GRAY, a citizen of the United States, residing at Logansport, in the county of Cass and State of Indiana, have invented certain new and useful Improvementsin Boiler-Cleaners for Steam-Engines, of which the following is a specification.

My invention relates to improvements in boiler cleaners for steam engines, and the object of the invention is to improve, simplify and reduce the cost of construction to a minimum by the employment of a cleaning attachment composed of two, a long and a short cleaning tube each provided with a suitable number of ports and a co-acting operating steam jet tube located in the bottom of the boiler and extending to the top of the same, all as will be hereinafter more in detail described and specifically claimed.

I have fully and clearly illustrated my improvements in the accompanying drawings, in which:

Figure 1 represents a top or plan sectional view of my improved device located in the bottom of the boiler. Fig. 2 is a longitudinal sectional elevation of the same.

' Fig. 3 is a perspective view of the cleaning tubes and the lower portion of the steam jet tube, and Fig. 4 is a sectional end view thereof.

Similar letters of reference designate similar parts in the several figures.

Referring to the drawings: A designates a tubular boiler of the ordinary or of any approved construction having the usual steam tube and dome, a further description of which herein is deemed unnecessary, as they form no part broadly of my invention.

B designates a long cleaning tube, the rear half portion of which being provided with a suitable number of ports I), and B designates a shortercleaning tube also provided with a suitable number of ports b and which screw into or are attached to tubular casting 0 having ports 0 0 located diametrically opposite each other; the neck of the casting, being also screw threaded as at c, engages corresponding screw threads 0 upon the outer surface of a short tubular extension D projected through the forward end of the boiler. Thefree ends of the cleaning tubes B and B are screw threaded, as at b and are provided with detachable caps E which have screw threads e on their inner surfaces that engage corresponding screw threads b upon the outer surface of the tube B.

The shorter tube B being a duplicate of the longer tube B, the length of it being the exception, it is considered unnecessary to multiply the notations thereon, as the same parts are noted'on said tube B.

Fgdesignates a portion of the double tubular casting C, interposed between the inner ends of the cleaning tubes B and B, said casting being provided with screw threads f which engage with corresponding screw threads f upon the outer surface of the boiler cleaning tubes B and- B, as clearly shown in Fig. 1 of the drawings.

G designates a revoluble blow-off pipe having a port is therein passed revolubly through the tubular extension D and extending through a central opening in F, this tubular extension forming a sleeve around theblow-off pipe.

D designates an angular live dry steam pipe, the upper end extending from the dome of the boiler downwardly to the bottom of same and the lower and horizontal end being projected through an opening centrally formed in a screw cap L, secured to the end of tube G, the extreme end of the steam pipe having a steam jet opening (1 formed therein by which the live steam is let in the revoluble blow-off tube in jets for the purposes intended, i. 6., for joint operation. with the boiler cleaning pipes and revoluble blow-off tube or roller valve. This blow-off tube is provided with a port It one end of which is located closely to or in juxtaposition to the steam jet end of the pipe D for a purpose which will be hereinafter explained.

H designates a packing box formed at the outer and forward end of the short tube D and surrounding the revoluble tube G near the outer end thereof and the packing is held in place by the gland I having screw threads upon its inner surface which take in screw threads formed upon the outer surface of the tube 1), the inner end of tube D having another set of screw threads formed upon the outer surface which take in screw threads formed upon the inner surface of the neck M, of the casting O.

.T designates a hand wheel secured in any suitable manner upon the outer and forward end of the blowoff valve tube G through the medium of which said tube G is adjustably and operatively controlled for opening and closing the port in the tube.

Importance is attached to the location of the main or salient parts of my device which it will be seen are located in the bottom of the boiler; the advantages of such location in cleaning out thoroughly the mud and sediment from the boiler and of non-freezing in cold weather will be obvious.

It will be also seen that I provide two cleaning tubes, a long and short tube, for the reason that some boilers are longer than others and by a provision of this kind the device will adapt itself to both.

The operation of the devices is as follows: The operator turns the hand wheel revolves the blow-off roller valve or tube connecting the port with one nearer half of the boiler, the short tubular piece having the packing box and gland connected with it and interposed between the blow-off tube and the neck of the tubular casting which holds the inner ends of the cleaning tubes forming a sleeve around the blow-off pipe, and,

as above stated, by connecting the port with one nearer half of the boiler and blow-off until this half is clean and then the blow-off pipe is turned in an opposite direction, closing it off on that side, and he then opens the other side and blows that side ofthe boiler clean and then the blow-off tube is given a turn onequarter of the'way and. closes both sides; The ports in the long tubular'cleaner are located half way only and in the rear portion thereof, for the purpose of cleaning that half of the boiler first, and the other or shorter cleaner with its ports extending nearly one-half of the distance back of the longest tube cleans the central portion or both sides of the boiler near this tube.

The two pipes being combined with a double tube,

the inner tube revolving for the purpose of opening one side at a time blowing one-halt'the length of the boiler. By means of the casting on the inside of the boiler having suitable ports and screw threads, the cleaner tubes and the small portion of the dry steam pipe where tapped in the end of the revolving blowoff valve tube forms a jet or siphon all of which operate jointly for cleaning out thoroughly the mud and sediment taking steam from the dome.

What I claim as new and desire to secure by Letters Patent is:

1. The combination with a steam boiler a steam pipe provided with a lower horizontal jet portion located in the bottom of the. boiler; ofa double tubular casting, long and short cleaning tubes having their ends-engaging the double tubular casting, a revoluble blow-0E valve tube, the inner portion being located within the boiler and within the double tubular casting and the other half portion projected outside of the boiler, a short tubular piece interposedbetween the revoluble blow-0E valve tube and the neck of. the double tubular casting.

2. The combination with a steam boiler a steam pipe I provided with a lower horizontal jet portion located in the bottom of the boiler, a double tubular casting, long and short cleaning tubes having the ends engaging the double tubular casting, a revoluble blow-off valve tube, the inner portion being located within the boiler and the other por tion projected outside the boiler, a short tubular piece interposed between the revoluble blow-off valve tube and the casting'havlng. a central opening through which'the blow 01f valve extends, and a. cap closing the inner end of the blow-off valve tube through which the steam pipe extends to form a jet in said blow-oft valve tube.

3. The combination With-a steam boiler a steam pipe provided with a lowerhorizontal jet portion located in the bottom of the boiler, a double tubular casting, long and short cleaning, tubes having the ends engaging the double tubular casting, a revoluble blow-off valve tube, the inner portion beinglocated Within the boiler and the other portion-projected outside, a short tubular piece interposed between the revoluble blow-off valve tube and the neck of the double tubular casting, said tubular casting having a central opening through which theblow-olf valve tube extends; a cap closing the end of said tube through which the steam pipe extends to form a jet in saidblow-oft valve tube, of a packing box secured to the outer end of the short tubular piece and surrounding the outer end of the revoluble blow-oft valve tube, and a hand wheel secured to the outer end of.the revoluble blow-0E valve tube, substantially as-described and for the purposes set forth.

4. In a steam boiler the combination of a double tubular casting, a short and a long cleaner tube connected thereto, a revolubleblow-ofit valve tube in said casting, all located in the bottom of the boiler, a steam jet pipe entering" said blow-off valve tube and means'exterior of the boiler for turning said blow-off valve tube soas to make communication between it and each cleaner tube'alternat'ely.

In testimony whereof I afiix my signature, in presence of two witnesses.-

ISAAC C. GRAY.

Witnesses:

BENJAMIN F. LONG, ELIZABETH HOMBURG.

neck of the double tubular casting, said double tubular 

